Hydration of α-pinene over zeolites and activated carbons dispersed in polymeric membranes

J. Vital; A. M. Ramos; I. F. Silva; Humberto Valente; J. E. Castanheiro

doi:10.1016/S0920-5861(99)00273-4

Hydration of α-pinene over zeolites and activated carbons dispersed in polymeric membranes

J. Vital, A. M. Ramos, I. F. Silva, Humberto Valente, J. E. Castanheiro

Research output: Contribution to journal › Article › peer-review

50 Citations (Scopus)

Abstract

The acid catalysed hydration of α-pinene yields a complex mixture of monoterpenes, alcohols and hydrocarbons. By controlling the reaction variables is possible to make it selective to the terpenic alcohols, namely α-terpineol. In this paper the results of the hydration reaction of α-pinene catalysed by polydimethylsiloxane (PDMS) membranes filled with zeolite USY, zeolite beta or a surface modified activated carbon, are reported. The reaction is carried out at 50°C, using aqueous acetone as solvent. The activity and selectivity towards α-terpineol of the composite membranes are compared with those of the free catalysts.

Original language	English
Pages (from-to)	167-172
Number of pages	6
Journal	Catalysis Today
Volume	56
Issue number	1-3
DOIs	https://doi.org/10.1016/S0920-5861(99)00273-4
Publication status	Published - 25 Feb 2000

Keywords

α-pinene hydration
Activated carbon
PDMS membranes
Zeolite beta
Zeolite USY

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abstract = "The acid catalysed hydration of α-pinene yields a complex mixture of monoterpenes, alcohols and hydrocarbons. By controlling the reaction variables is possible to make it selective to the terpenic alcohols, namely α-terpineol. In this paper the results of the hydration reaction of α-pinene catalysed by polydimethylsiloxane (PDMS) membranes filled with zeolite USY, zeolite beta or a surface modified activated carbon, are reported. The reaction is carried out at 50°C, using aqueous acetone as solvent. The activity and selectivity towards α-terpineol of the composite membranes are compared with those of the free catalysts.",

keywords = "α-pinene hydration, Activated carbon, PDMS membranes, Zeolite beta, Zeolite USY",

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AU - Vital, J.

AU - Ramos, A. M.

AU - Silva, I. F.

AU - Valente, Humberto

AU - Castanheiro, J. E.

PY - 2000/2/25

Y1 - 2000/2/25

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AB - The acid catalysed hydration of α-pinene yields a complex mixture of monoterpenes, alcohols and hydrocarbons. By controlling the reaction variables is possible to make it selective to the terpenic alcohols, namely α-terpineol. In this paper the results of the hydration reaction of α-pinene catalysed by polydimethylsiloxane (PDMS) membranes filled with zeolite USY, zeolite beta or a surface modified activated carbon, are reported. The reaction is carried out at 50°C, using aqueous acetone as solvent. The activity and selectivity towards α-terpineol of the composite membranes are compared with those of the free catalysts.

KW - α-pinene hydration

KW - Activated carbon

KW - PDMS membranes

KW - Zeolite beta

KW - Zeolite USY

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Hydration of α-pinene over zeolites and activated carbons dispersed in polymeric membranes

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Keywords

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